chem 101 final exam ivy tech exam complete 100 que
chem 101 final exam ivy tech exam complete
chem 101 final exam ivy tech exam
chem 101 final exam ivy tech
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CHEM 101 FINAL EXAM IVY TECH EXAM COMPLETE 100 QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) ALREADY GRADED
A+
1 Diatomic O2 can react with the element magnesium to form magnesium oxide (MgO). The
balanced chemical equation is:
O2 + Mg ö 2 MgO
If 4 moles of magnesium totally reacted with more than enough O2, how many moles of MgO
would be expected to form?
A. 8 Moles
B. 2 Moles
C. 4 Moles
D. 1 Mole
E. Not Enough Info: C
2. Which of the following is TRUE?
A. Stoichiometry allows prediction of how much of the reactants are necessary to form a given
amount of product.
B. All of the above are true.
C. Stoichiometry allows prediction of the amount of products that form in a chemical reaction
based on the amounts of reactants.
D. Stoichiometry shows the numerical relationship between chemical quanti-ties in a balanced
chemical equation.: B
3. Diatomic N2 can react with diatomic H2 to form ammonia (NH3). The balanced chemical
equation is:
N2 + 3 H2 ö 2 NH3
If 6 moles of H2 totally reacted with more than enough N2, how many moles of ammonia would
be expected to form?
A. 4 Moles
B. 6 Moles
,C. 3 Moles
D. 2 Moles
E. Not enough info: A
4 How many grams of the excess reactant remain assuming the reaction goes to completion and
that you start with 15.5 g of Na2S and 12.1 g of CuSO4? Reaction: Na2S+ CuSO4 ö Na2SO4 +
CuS
A. 0.05
B. 9.58
C. 5.92
D. 15.45: B
5. Calculate the maximum number of grams of NH3 that can be produced by the reaction of 2.00
g of N2 with 3.00 g of H2.
Reaction: N2 (g) + 3H2 (g) ö 2 NH3 (g)
A. 2.43
B. 0.964
C. None of the above
D. 4.00
E. 17.0: A
6. Which is the limiting reactant in the following reaction given that you start with 42.0 g of CO2
and 99.9 g KOH?
Reaction: CO2+ 2 KOH ö K2CO3 + H2O
A. CO2
B. Not enough information
C. KOH
D. K2CO3
E. H2O: C
7. How many moles of lithium nitrate are theoretically produced if we start with
3.4 moles of Ca(NO3)2 and 2.4 moles of Li3PO4?
Reaction: 3 Ca(NO3)2 + ö 6LiNO3 + Ca3(PO4)2
A. 1.1
, B. 6.8
C. 1.2
D. Not enough info
E. 7.2: B
8 Consider the following reaction: 2 Mg + O2 ö 2 MgO ” Hrxn = -1203 kJ. Calculate the amount
of heat (in kJ) associated with complete reaction of 4 moles of Mg.
A. -1203 kJ
B. -601.5 kJ
C. -4812 kJ
D. None of the above
E. -2406 kJ: E
9. Hydrochloric acid reacts with barium hydroxide according to the equation:
Calculate the heat (in kJ) associated with the complete reaction of 18.2 grams of HCl (aq).
A. -58.9
B. -29.5
C. None of above
D. -236
E. +58.9: B
10. How many grams of NO2 are theoretically produced if we start with 1.2 moles of S and 9.90
moles of HNO3?
Reaction: S + 6HNO3 ö H2SO4+ 6 NO3+ 2 H2O
A. 455
B. Not enough info
C. 7.20
D. 786
E. 331: E
11. What is the limiting reactant for the following reaction given we have 3.4
moles of Ca(NO3)2 and 2.4 moles of Li3PO4?
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